Back-end Node.js Developer

fusionSpan; Warszawa; Remote; PLN 217,000 - 327,000; Full time

Job summary

A rapidly growing technology services company is seeking a Back-end Developer specializing in Node.js and TypeScript. You will design secure and scalable APIs while working remotely with international teams. Ideal candidates will have over 3 years of experience and strong skills in database optimization. The position offers flexible hours and opportunities for career growth in a fast-paced environment.

Qualifications

• 3+ years of professional backend development experience.
• Strong proficiency in Node.js and TypeScript.
• Hands-on experience with NestJS or similar frameworks.
• Solid understanding of PostgreSQL database design and optimization.

Responsibilities

• Design, develop, and maintain backend services using Node.js, TypeScript, and the NestJS framework.
• Architect and optimize PostgreSQL databases.
• Build and integrate REST and SOAP APIs for internal and external services.
• Monitor and troubleshoot application performance.

Skills

Node.js

TypeScript

NestJS

PostgreSQL optimization

Education

Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience

Tools

Jest

Mocha

Supertest

Git

Job description

Overview

fusionSpan is a fast-growing US based multinational information technology services company, and we are seeking a Salesforce Developer to join the team.

We are actively seeking a skilled Back-end Developer with expertise in Node.js, TypeScript, and NestJS to design and implement secure and scalable APIs and services. Your experience will play a crucial role in driving our projects forward.

This is a long term contract role and can be an hourly or monthly fixed-price contract. You will be working remotely with US based team members and clients. We would want some flexibility with hours, so a typical day would end at 7pm local time.

About the Role

We are seeking a Back-end Developer experienced in Node.js, TypeScript, and NestJS to design and implement secure, scalable APIs and services. You will work closely with frontend teams, DevOps engineers, and product owners to build high-performance server-side applications and integrations.

Key Responsibilities

• Design, develop, and maintain backend services using Node.js, TypeScript, and the NestJS framework.
• Architect and optimize PostgreSQL databases, including schema design, query optimization, and data migrations.
• Build and integrate REST and SOAP APIs for internal and external services.
• Collaborate with cross-functional teams to define and deliver scalable solutions.
• Write clean, maintainable, and well-tested code with a focus on reliability and performance.
• Monitor and troubleshoot application performance and production issues.
• Participate in code reviews, architecture discussions, and CI/CD pipeline improvements.

Required Qualifications

• 3+ years of professional backend development experience.
• Strong proficiency in Node.js and TypeScript.
• Hands-on experience with NestJS or similar frameworks (e.g., Express, Koa).
• Solid understanding of PostgreSQL database design, optimization, and query tuning.
• Proven experience building and consuming REST and SOAP APIs.
• Familiarity with Git, Agile/Scrum workflows, and code review processes.

Preferred Skills

• Experience with testing frameworks (e.g., Jest, Mocha, Supertest).
• Experience with performance monitoring and logging tools
• Strong problem-solving and analytical abilities.
• Excellent communication and collaboration skills.
• Ability to work independently and deliver high-quality results on time.
• Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience.

This is a position that will allow you to grow your career in a high-growth US-based company. Needs good English communication skills. The position is 100% remote.

About fusionSpan

fusionSpan is a fast-paced, high-energy global firm with a highly motivated team. This role will experience high work demands under tight timelines requiring a flexible and adaptable approach to daily priorities. We are open to qualified candidates worldwide even though our job opportunities are posted for a specific region.

Check out our Great Place to Work Certified Badge here.

Our Company Values:

• Trust: We believe trust is the foundation of success, and build it through unwavering integrity, transparency, and open communication. We deliver on promises, address challenges directly, and hold ourselves accountable to excellence in all interactions with clients, partners, and teammates.
• Innovation: We understand that excellence and innovation go hand-in-hand and are committed to developing forward-looking, creative solutions that meet our clients’ evolving needs and move the industry forward. We embrace change, celebrate creativity, and prioritize quality to create a new standard of performance.
• Community: We are a community-first organization committed to creating a culture of collaboration, inclusivity, and respect where each voice is heard and all contributions are valued. We prioritize responsible and sustainable practices on our path to positively impact those we serve.